uvm_fault(0xffffffff8387c790, 0x1, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at mld6_fasttimeo+0x133: movzbl 0x1(%rax),%r15d
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*301101 6812 0 0x14000 0x40000200 0 softclock
mld6_fasttimeo() at mld6_fasttimeo+0x133 mld6_checktimer sys/netinet6/mld6.c:383 [inline]
mld6_fasttimeo() at mld6_fasttimeo+0x133 sys/netinet6/mld6.c:363
pffasttimo(ffffffff83977ad0) at pffasttimo+0x184 sys/kern/uipc_domain.c:-1
timeout_run(ffffffff83977ad0) at timeout_run+0xc0 sys/kern/kern_timeout.c:-1
softclock_thread(ffff80002a72d710) at softclock_thread+0xe3 sys/kern/kern_timeout.c:810
end trace frame: 0x0, count: 11
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: uvm_fault(0xffffffff8387c790, 0x1, 0, 1) -> e
ddb> trace
mld6_fasttimeo() at mld6_fasttimeo+0x133 mld6_checktimer sys/netinet6/mld6.c:383 [inline]
mld6_fasttimeo() at mld6_fasttimeo+0x133 sys/netinet6/mld6.c:363
pffasttimo(ffffffff83977ad0) at pffasttimo+0x184 sys/kern/uipc_domain.c:-1
timeout_run(ffffffff83977ad0) at timeout_run+0xc0 sys/kern/kern_timeout.c:-1
softclock_thread(ffff80002a72d710) at softclock_thread+0xe3 sys/kern/kern_timeout.c:810
end trace frame: 0x0, count: -4
ddb> show registers
rdi 0x2
rsi 0
rbp 0xffff80002a7391c0
rbx 0
rdx 0
rcx 0x1
rax 0
r8 0x21
r9 0
r10 0xbe4fd44ab1c1462b
r11 0x8f143438ec5a98a3
r12 0x1
r13 0xffff800001467000
r14 0xffff80000149a800
r15 0
rip 0xffffffff81f1a8d3 mld6_fasttimeo+0x133
cs 0x8
rflags 0x10286 __ALIGN_SIZE+0xf286
rsp 0xffff80002a739190
ss 0
mld6_fasttimeo+0x133: movzbl 0x1(%rax),%r15d
ddb> show proc
PROC (softclock) tid=301101 pid=6812 tcnt=1 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=40000200<SYSTEM,CPUPEG>
runpri=0, usrpri=51, slppri=0, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a72d9a0,0xffff80002a72d490
process=0xffff8000ffffda10 user=0xffff80002a734000, vmspace=0xffffffff8387c790
estcpu=1, cpticks=1, pctcpu=0.0, user=0, sys=2, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
99670 72818 67370 0 2 0 syz-executor
99670 506867 67370 0 2 0x4000000 syz-executor
86823 181818 83526 0 2 0 syz-executor
86823 117169 83526 0 3 0x4000080 fsleep syz-executor
46819 371808 18638 0 2 0 syz-executor
46819 311361 18638 0 3 0x4000080 fsleep syz-executor
46819 326353 18638 0 3 0x4000080 fsleep syz-executor
92024 152457 44396 0 2 0 syz-executor
92024 407330 44396 0 3 0x4000080 fsleep syz-executor
92024 407328 44396 0 3 0x4000080 fsleep syz-executor
49311 360660 21616 0 2 0x10 syz-executor
49311 461392 21616 0 3 0x4000090 fsleep syz-executor
49311 418061 21616 0 3 0x4000090 fsleep syz-executor
34464 291860 19506 0 2 0 syz-executor
34464 9248 19506 0 3 0x4000080 fsleep syz-executor
34464 202871 19506 0 3 0x4000080 fsleep syz-executor
20201 138240 39592 60928 2 0x10 syz-executor
20201 181982 39592 60928 2 0x4000010 syz-executor
20201 288916 39592 60928 3 0x4000090 fsleep syz-executor
20201 93656 39592 60928 3 0x4000090 fsleep syz-executor
18638 327226 79432 0 3 0x82 nanoslp syz-executor
11174 34459 0 0 3 0x14200 acct acct
9097 353821 0 0 3 0x14200 bored sosplice
44396 106383 79432 0 2 0x482 syz-executor
83518 5426 79432 0 2 0x482 syz-executor
39592 46467 79432 0 3 0x82 nanoslp syz-executor
21616 68442 79432 0 2 0x482 syz-executor
19506 147527 79432 0 2 0x482 syz-executor
83526 504033 79432 0 3 0x82 nanoslp syz-executor
67370 382766 79432 0 3 0x82 nanoslp syz-executor
79432 245536 16544 0 3 0x82 kqread syz-executor
16544 447947 56191 0 3 0x10008a sigsusp ksh
56191 396757 54897 0 3 0x98 kqread sshd-session
54897 300220 73226 0 3 0x92 kqread sshd-session
99726 418097 1 0 3 0x100083 ttyin getty
73226 434488 1 0 3 0x88 kqread sshd
82091 123458 91752 73 3 0x1100090 kqread syslogd
91752 337205 1 0 3 0x100082 sbwait syslogd
13441 341021 1 0 3 0x100080 kqread resolvd
3822 199342 98478 77 3 0x100092 kqread dhcpleased
8218 57666 98478 77 3 0x100092 kqread dhcpleased
98478 141968 1 0 3 0x80 kqread dhcpleased
86925 449799 0 0 3 0x14200 bored smr
28243 88602 0 0 2 0x14200 zerothread
34555 373621 0 0 3 0x14200 aiodoned aiodoned
23950 18987 0 0 3 0x14200 syncer update
61404 324367 0 0 3 0x14200 cleaner cleaner
84311 154378 0 0 3 0x14200 reaper reaper
9717 372939 0 0 3 0x14200 pgdaemon pagedaemon
49727 297325 0 0 3 0x14200 bored viomb
83987 238617 0 0 3 0x40014200 acpi0 acpi0
5037 38913 0 0 3 0x14200 bored softnet3
44955 56572 0 0 3 0x14200 bored softnet2
27524 141745 0 0 3 0x14200 bored softnet1
2703 367967 0 0 3 0x14200 bored softnet0
57461 41199 0 0 3 0x14200 bored systqmp
48802 355485 0 0 3 0x14200 bored systq
* 6812 301101 0 0 7 0x40014200 softclock
68461 511077 0 0 3 0x40014200 idle0
1 287037 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10206 11129K 11690K 166960K 12063 0
pcb 20 14K 16K 166960K 160 0
rtable 249 11K 12K 166960K 469 0
pf 34 13K 18K 166960K 117 0
ifaddr 41 7K 8K 166960K 69 0
ifgroup 50 2K 2K 166960K 103 0
sysctl 4 1K 1K 166960K 4 0
counters 30 17K 17K 166960K 57 0
ioctlops 0 0K 4K 166960K 124 0
iov 0 0K 16K 166960K 38 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1349 85K 85K 166960K 1935 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 3 5K 9K 166960K 12 0
VM map 2 1K 1K 166960K 2 0
sem 12 20K 20K 166960K 20 0
dirhash 12 2K 2K 166960K 24 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 18 65K 97K 166960K 686 0
sigio 0 0K 0K 166960K 6 0
proc 62 67K 124K 166960K 577 0
subproc 72 4K 4K 166960K 82 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 82 0
in_multi 98 7K 7K 166960K 122 0
ether_multi 1 0K 0K 166960K 4 0
mrt 0 0K 0K 166960K 8 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 229 1023K 1023K 166960K 229 0
exec 0 0K 1K 166960K 473 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 252 152K 170K 166960K 8000 0
UVM aobj 16 2K 4K 166960K 18 0
pinsyscall 39 78K 100K 166960K 1769 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 31 0
NDP 11 0K 2K 166960K 47 0
temp 55 8671K 8748K 166960K 25204 0
kqueue 14 22K 30K 166960K 118 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 141 0 137 3 2 1 3 0 8 0
rtentry 136 133 0 27 4 0 4 4 0 8 0
unpcb 144 802 0 721 9 1 8 8 0 8 5
syncache 336 8 0 8 2 1 1 1 0 8 1
tcpqe 32 3 0 3 2 1 1 1 0 8 1
tcpcb 808 145 0 139 2 0 2 2 0 8 0
arp 88 22 0 6 1 0 1 1 0 8 0
inpcb 344 731 0 719 15 8 7 7 0 8 5
nd6 104 27 0 3 1 0 1 1 0 8 0
pkpcb 40 5 0 5 2 1 1 1 0 8 1
kcovpl 48 9 0 1 1 0 1 1 0 8 0
mppekey 1024 2 0 2 2 1 1 1 0 8 1
ppxss 1072 21 0 21 3 2 1 1 0 8 1
pppxif 1384 2 0 2 2 1 1 1 0 8 1
pfstscr 40 2 0 2 1 0 1 1 0 8 1
pfrktable 1344 8 0 5 1 0 1 1 0 8 0
pfanchor 1288 6 0 1 1 0 1 1 0 8 0
pftag 88 3 0 1 1 0 1 1 0 8 0
pfstkey 128 4 0 4 1 0 1 1 0 8 1
pfstate 344 2 0 2 1 0 1 1 0 8 1
pfrule 1344 10 0 4 1 0 1 1 0 8 0
rttmr 136 2 0 2 2 1 1 1 0 8 1
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 585 0 126 30 1 29 30 0 8 0
art_table 32 587 0 126 4 0 4 4 0 8 0
art_node 16 131 0 36 1 0 1 1 0 8 0
sysvmsgpl 40 5 0 4 1 0 1 1 0 8 0
semupl 112 2 0 2 1 0 1 1 0 8 1
semapl 112 15 0 5 1 0 1 1 0 8 0
shmpl 112 15 0 2 1 0 1 1 0 8 0
dirhash 1024 25 0 8 3 0 3 3 0 8 0
dino2pl 256 2696 0 1192 95 0 95 95 0 8 0
ffsino 248 2696 0 1192 95 0 95 95 0 8 0
nchpl 144 3667 0 1982 63 0 63 63 0 8 0
rtmask 32 6 0 6 1 0 1 1 0 8 1
uvmvnodes 80 2214 0 0 46 0 46 46 0 8 0
vnodes 216 2214 0 0 123 0 123 123 0 8 0
namei 1024 12268 0 12268 3 1 2 2 0 8 2
pfiaddrpl 120 2 0 1 1 0 1 1 0 8 0
kstatmem 264 58 0 36 2 0 2 2 0 8 0
scsiplug 72 3 0 3 1 0 1 1 0 8 1
scxspl 216 10795 0 10795 9 1 8 8 1 8 8
plimitpl 152 148 0 130 1 0 1 1 0 8 0
sigapl 424 971 0 923 7 1 6 7 0 8 0
futexpl 64 8912 0 8901 2 1 1 1 0 8 0
knotepl 120 128269 0 128212 28 18 10 15 0 8 8
kqueuepl 184 233 0 219 2 1 1 2 0 8 0
pipepl 296 176 0 147 5 0 5 5 0 8 2
fdescpl 440 953 0 923 5 1 4 5 0 8 0
filepl 120 6220 0 5926 19 6 13 13 0 8 4
lockfpl 104 278 0 275 1 0 1 1 0 8 0
lockfspl 48 69 0 66 1 0 1 1 0 8 0
sessionpl 144 27 0 19 1 0 1 1 0 8 0
pgrppl 48 41 0 25 1 0 1 1 0 8 0
ucredpl 104 1195 0 1182 1 0 1 1 0 8 0
zombiepl 144 1242 0 1240 2 1 1 1 0 8 0
processpl 1112 971 0 923 4 0 4 4 0 8 0
procpl 656 1959 0 1895 7 1 6 6 0 8 0
sosppl 168 3 0 3 2 1 1 1 0 8 1
sockpl 528 1717 0 1619 26 15 11 16 0 8 4
mcl64k 65536 17 0 17 2 1 1 1 0 8 1
mcl16k 16384 1 0 1 1 0 1 1 0 8 1
mcl9k 9216 3 0 3 2 1 1 1 0 8 1
mcl8k 8192 10 0 10 2 1 1 1 0 8 1
mcl4k 4096 3177 0 3128 15 7 8 14 0 8 1
mcl2k 2048 625 0 624 2 0 2 2 0 8 1
mtagpl 96 109 0 17 3 0 3 3 0 8 0
mbufpl 256 9964 0 9711 18 0 18 18 0 8 1
bufpl 280 3200 0 125 220 0 220 220 0 8 0
anonpl 24 153605 0 147986 49 2 47 47 0 187 3
amapchunkpl 152 26621 0 26000 54 13 41 41 0 158 15
amappl16 200 2450 0 2340 10 0 10 10 0 8 0
amappl15 192 65 0 65 1 1 0 1 0 8 0
amappl14 184 114 0 104 1 0 1 1 0 8 0
amappl13 176 4 0 4 1 1 0 1 0 8 0
amappl12 168 1656 0 1626 3 1 2 3 0 8 0
amappl11 160 79 0 69 1 0 1 1 0 8 0
amappl10 152 5 0 5 1 1 0 1 0 8 0
amappl9 144 255 0 255 1 1 0 1 0 8 0
amappl8 136 39 0 37 1 0 1 1 0 8 0
amappl7 128 104 0 94 1 0 1 1 0 8 0
amappl6 120 182 0 179 1 0 1 1 0 8 0
amappl5 112 116 0 109 1 0 1 1 0 8 0
amappl4 104 323 0 306 1 0 1 1 0 8 0
amappl3 96 5036 0 4912 4 0 4 4 0 8 0
amappl2 88 667 0 609 2 0 2 2 0 8 0
amappl1 80 11526 0 10972 14 0 14 14 0 8 0
amappl 88 7195 0 7008 5 0 5 5 0 92 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 17 0 2 1 0 1 1 0 8 0
uaddrrnd 24 953 0 923 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 953 0 923 1 0 1 1 0 8 0
vmmpekpl 168 9652 0 9606 3 0 3 3 0 8 0
vmmpepl 168 67026 0 65008 94 1 93 93 0 357 2
vmsppl 360 952 0 923 4 1 3 4 0 8 0
rwobjpl 32 22040 0 18843 27 0 27 27 0 8 0
pdppl 4096 1912 0 1846 108 42 66 82 0 8 0
pvpl 32 420017 0 409147 137 12 125 125 0 265 18
pmappl 216 952 0 923 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 290 0 57 8 0 8 8 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
mld6_fasttimeo() at mld6_fasttimeo+0x133 mld6_checktimer sys/netinet6/mld6.c:383 [inline]
mld6_fasttimeo() at mld6_fasttimeo+0x133 sys/netinet6/mld6.c:363
pffasttimo(ffffffff83977ad0) at pffasttimo+0x184 sys/kern/uipc_domain.c:-1
timeout_run(ffffffff83977ad0) at timeout_run+0xc0 sys/kern/kern_timeout.c:-1
softclock_thread(ffff80002a72d710) at softclock_thread+0xe3 sys/kern/kern_timeout.c:810
end trace frame: 0x0, count: -4
ddb> machine ddbcpu 1
No such command
ddb> trace
mld6_fasttimeo() at mld6_fasttimeo+0x133 mld6_checktimer sys/netinet6/mld6.c:383 [inline]
mld6_fasttimeo() at mld6_fasttimeo+0x133 sys/netinet6/mld6.c:363
pffasttimo(ffffffff83977ad0) at pffasttimo+0x184 sys/kern/uipc_domain.c:-1
timeout_run(ffffffff83977ad0) at timeout_run+0xc0 sys/kern/kern_timeout.c:-1
softclock_thread(ffff80002a72d710) at softclock_thread+0xe3 sys/kern/kern_timeout.c:810
end trace frame: 0x0, count: -4